Hello, so I've been studying the linux btrfs code and have come across this: in inode.c function uncompress_inline the max_size size variable is set to min(max_size, PAGE_SIZE) and only max_size of output data are decompressed. The code for compression (in lzo.c for example) uses PAGE_SIZEd chunks to compress an inline extent. If I understand it correctly, then if the filesystem is created and used on a computer with PAGE_SIZE for example 16KB, and an extent of size 16KB is compressed to (for example 9KB) and stored as inline extent, and then the filesystem is mounted on a computer with PAGE_SIZE = 4KB, reading the extent will result in a failure or incomplete read. Is this a bug, or is this behaviour a feature? Thank you. Marek -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
